Seems easy, right?
But it is proving a bit of a challenge.
The lower case letters look so similar and as you advance through the stages of the quiz the letters become smaller, making the b very tricky to spot.
The Playbuzz quiz claims you have to be very patient and have a high IQ in order to spot them all.

For each level there are three boxes filled with several rows of the letter d.
Only one of the boxes contains a b.
To make matters even more difficult, as you go through the stages, not every box contains the same amount of letters.
By the end of the quiz, there are more than 150 characters to chose from.
So, can you find all the letter b’s?

And, if you’re after something a little more festive, why not give this Christmassy challenge a go?

The seasonal puzzle currently baffling the web sees a cheeky elf hiding among a snow-capped wintry forest – and he’s deviously difficult to spot.

The elf is nestled between over 150 fir trees and there are a number of confusing elements to the image – including the golden trail that draws your eye away from the cheeky chap.
While it does make him harder to see, one clue is that the elf’s hat is the same colour as the many tree tops.